Monday, March 14, 2011

Corrected: Status of Fukushima Reactors March 14; 20:30 local

Correction: I inserted the link to NISA in what should have been JAIF.
For reference here's Japan's Nuclear and Industrial Safety Agency (NISA)
The status report is fromrom the Japan Atomic Industrial Forum (JAIF):



Status of reactors at 12:30 March 14 1 2 3 4 5 6
Power output (MWe) 460 784 784 784 784 1100
Type of reactor BWR-3 BWR-4 BWR-4 BWR-4 BWR-4 BWR-5
Status at earthquake In service In service In service Shut down Shut down Shut down
Fuel integrity Damaged Not damaged Damaged Not damaged Not damaged Not damaged
Containment integrity Not damaged Not damaged Not damaged Not damaged Not damaged Not damaged
Core cooling system 1 (ECCS/RHR) Not functional Not functional Not functional Not necessary Not necessary Not necessary
Core cooling system 2 (RCIC/MUWC) Not functional RCIC Working Not functional Not necessary Not necessary Not necessary
Building integrity Damaged Not damaged Damaged Not damaged Not damaged Not damaged
Environmental effect 20 microSievert/hour at 11:44AM
Pressure vessel, water level Unknown Above core Unknown Safe Safe Safe
Pressure vessel, pressure Stable Stable Stable Safe Safe Safe
Containment pressure Stable Stable Stable Safe Safe Safe
Sea water injection Suspended To be decided Performed Not necessary Not necessary Not necessary
Containment venting Performed Preparing Performed Not necessary Not necessary Not necessary
Evacuation area 20 km
INES Level 4 (estimated by NISA)

Status of reactors at 20:30 March 14[43] 1 2 3 4 5 6
Power output (MWe) 460 784 784 784 784 1100
Type of reactor BWR-3 BWR-4 BWR-4 BWR-4 BWR-4 BWR-5
Status at earthquake In service In service In service Shut down Shut down Shut down
Fuel integrity Damaged Unknown Damaged Not damaged Not damaged Not damaged
Containment integrity Not damaged Not damaged Not damaged Not damaged Not damaged Not damaged
Core cooling system 1 (ECCS/RHR) Not functional Not functional Not functional Not necessary Not necessary Not necessary
Core cooling system 2 (RCIC/MUWC) Not functional Not functional Not functional Not necessary Not necessary Not necessary
Building integrity Damaged Not damaged Damaged Not damaged Not damaged Not damaged
Environmental effect 15 microSievert/hour at 13:55AM
Pressure vessel, water level Unknown Low (recovering) Unknown Safe Safe Safe
Pressure vessel, pressure Stable Unknown Stable Safe Safe Safe
Containment pressure Stable Increasing Stable Safe Safe Safe
Sea water injection Suspended Done Performed Not necessary Not necessary Not necessary
Containment venting Performed Preparing Performed Not necessary Not necessary Not necessary
Evacuation area 20 km
INES Level 4 (estimated by NISA)